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The Electronic Expansion valve that requires a FREE software download and an outrageously priced USB Dongle to program or communicate with?

The same system that they're installing on their Glycol "semi-self-contained" systems, attaching the controller to the bottom of the drip pan and wondering why they burn out?

Nope.... Never worked on one....... This week....

Whaddya need to know?

Sounds like the same setup. The way I'm seeing it you have to use a IR device that plugs into ones laptop then shoot it at the possessor. This is the only way to reprogram it for a different refrigerant use. That's not what I'm after though. Was just curious if one can troubleshoot the plugins. I know the first thing I need to do with the one I'm working on is to get the outdoor unit on some type of head pressure control. Will these valves hunt like the mechanical valves ? How much is the dongle ?

Sounds like the same setup. The way I'm seeing it you have to use a IR device that plugs into ones laptop then shoot it at the possessor. This is the only way to reprogram it for a different refrigerant use. That's not what I'm after though. Was just curious if one can troubleshoot the plugins. I know the first thing I need to do with the one I'm working on is to get the outdoor unit on some type of head pressure control. Will these valves hunt like the mechanical valves ? How much is the dongle ?

I suppose that wild swings in system operating conditions could make the valve hunt, but under relatively constant conditions, they're TIGHT! They'll run a nice, low superheat and keep it pretty tightly controlled with a minimum of hunting.

My understanding was that the dongle was about $400. I didn't buy it, though.

I suppose that you could troubleshoot these systems by 'guess and golly' but I've found that a laptop and the dongle make it much easier and more accurate.

I suppose that wild swings in system operating conditions could make the valve hunt, but under relatively constant conditions, they're TIGHT! They'll run a nice, low superheat and keep it pretty tightly controlled with a minimum of hunting.

My understanding was that the dongle was about $400. I didn't buy it, though.

I suppose that you could troubleshoot these systems by 'guess and golly' but I've found that a laptop and the dongle make it much easier and more accurate.

Thanks jp,
So it sounds like you got your company to shell out the shillings for you....nice. Unfortunately this cheap a$$ is not going to do that. I'm twisting his arm just to get a fan cycling control on it. I would much rather pipe in a proper head pressure control. This reach-in is using R404a at medium temp. What should the coil temp. be running at ? I was at about 15* if I remember correctly. Hill Phoenix is showing a 6-8* superheat. I was getting a yellow/red led which is a high superheat code. Also the case is on a time clock for time defrost is that necessary ?
Thanks VTP